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Privacy notice

Updated 30 October 2026

Information the app uses

SlowStrong uses the information you enter to provide workout plans, record progress, calculate nutrition targets, and remember your settings. This can include your name, age, gender, weight, height, fitness goals, experience, equipment, aches or injuries, workout records, and nutrition entries.

Health details and your consent

Some of what you enter is health information: body weight and measurements, age, height, aches or injuries, and how you feel in the daily check-in. The app only saves these after you tick the agreement box, and uses them only to run the app for you: your plan, recovery guidance, nutrition targets, progress charts and, where available, AI answers. They are not sold or used for advertising.

You can withdraw your agreement at any time in Profile under Health details. Withdrawing deletes those details from your device and your account; your workouts, goals and settings stay. Your account data is stored with Supabase in Mumbai, India, and processed by the providers listed below; where the law requires, these transfers rely on the providers' standard data protection terms.

Accounts and Google sign-in

Email accounts use your email address and authentication details through Supabase. If you choose Google sign-in, Google shares your basic account information, including your name, email address, and profile picture, to identify and sign you into your account. The app does not receive your Google password or request access to Gmail, Drive, or Calendar.

SlowStrong uses information received from Google APIs in accordance with the Google API Services User Data Policy, including its Limited Use requirements.

Device storage and account sync

Guest progress, preferences, and unfinished workouts are stored in your browser using cookies and local storage. A service worker caches parts of the app for offline use. When you sign in, selected profile, workout, nutrition, and preference data can be saved to your Supabase account so it is available on other devices.

AI coach and meal planning

When you use an AI feature, your question or meal-planning request and relevant profile or workout context are sent to Google Gemini to generate the answer. This context can include your age, body measurements, goals, equipment, nutrition targets, or aches you have entered. Avoid entering information you do not want processed by the AI provider. Google processes these requests under its Gemini API terms.

During the beta, the AI features use Google's free Gemini API service. Under its terms, Google may use these requests to improve its products, and people at Google may read them. For this reason the AI coach and meal planner are not offered in the European Economic Area, the United Kingdom, or Switzerland during the beta; the rest of the app works as normal there. We plan to move to Google's paid service, which does not use requests to improve Google's products, before the public launch.

Feedback form and launch news

Beta testers can send feedback through a Google Form. Anything you write there is used to fix and improve the app. If you give an email address there, we only use it to reply to you.

If you also tick “Yes, email me when the app launches”, we will use that address to send you news about the launch of the app, and nothing else. Every such email has an unsubscribe link, and you can ask us to delete your address at any time using the contact below. We do not sell or share these addresses. The launch list is kept separately from your app account, and we do not use the email address you sign up or sign in with for marketing.

Visit statistics

We use Vercel Web Analytics to count visits and page views, so we know which parts of the app are used. It does not use cookies and does not follow you across other websites, and we do not use it to identify you or build a profile of you.

Services that process information

Supabase provides authentication and database storage, Vercel hosts the app, and Google provides optional sign-in and AI features. These services may process technical request information to operate and secure the app. The app uses hashed account and network identifiers with short-lived counters to limit AI requests. The external Gumroad store is a separate service with its own privacy terms.

Your controls

You can download a copy of your app data from Profile and delete individual Heavy Duty sets from your logbook. Erasing device data clears that browser's copy; it does not delete information already stored in your account. Account data remains stored until it is removed. You can permanently delete your account and everything saved with it from Profile with Delete my account (see how to delete your account). Contact app support to request account-data access or correction, or deletion if you can't sign in. You can also revoke Google access in your Google Account settings.

Contact

For privacy questions and account-data requests, email pranavvakkat54@gmail.com.